PlayStation 4 & AMD Radeon R9 290X GPU share the same 8 ACE ( Asynchronous Compute Engines )
Newly leaked slides from AMD's new Radeon R9 290X Hawaii GPU reveals that the Volcanic Islands GPU will also feature 8 Asynchronous Compute Engines much like the Liverpool GPU inside of Sony's new PS4. Each of the 8 ACE's can manage up to 8 compute queues for a total of 64 compute commands, in comparison the HD 7970 only has 2 ACE's that could only queue 2 compute commands for a total of 4 & the Xbox One only has 2 ACE's but they also manage up to 8 compute queues for a total of 16 compute queues. Could this mean that the PS4's GPU is also a part of AMD's Volcanic Islands family?
"PS4 GPU
has a total of 2 rings and 64 queues on 10 pipelines
- Graphics (GFX) ring and pipeline
- Same as R10xx
- Graphics and compute
- For game
- High Priority Graphics (HP3D) ring and pipeline
- New for Liverpool
- Same as GFX pipeline except no compute capabilities
- For exclusive use by VShell
- 8 Compute-only pipelines
- Each pipeline has 8 queues of a total of 64
- Replaces the 2 compute-only queues and pipelines on R10XX
- Can be used by both game and VShell (likely assign on a pipeline basis, 1 for VShell, and 7 for game)
- Queues can be allocated by game system or by middleware type
- Allows rendering and compute loads to be processed in parallel
- Liverpool compute-only pipelines do not have Constant Update Engines (presented in R10XX cards) "
to make a long story short
here is a comparison between the two systems side by side
XBOX ONE GPU:
1.18 TF GPU (12 CUs) for games
768 Shaders
48 Texture units
16 ROPS
2 ACE/ 16 queues
PLAYSTATION 4 GPU:
1.84TF GPU (18 CUs) for games + 56%
1152 Shaders +50%
72 Texture units +50%
32 ROPS + 100%
8 ACE/64 queues +300%
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